Replicant

It was mentioned in Replicant60BuildDependenciesInstallation, and I've removed it not to have too much information for users, however for maintenance purposes, we still need to track this bug: if versions of repo that don't update themselves exists we could also ship an old version of repo that doesn't update itself instead of relying on Guix to build a new version of repo that works on older distributions.

On progress here, please drop a note to 855846@bugs.debian.org to help the situation there as well.